fix：添加缓存

server-common/src/main/java/com/makeit/module/iot/service/IotProductDeviceService.java

@@ -20,7 +20,6 @@ import com.makeit.utils.LongTimestampUtil;
 import com.makeit.utils.data.convert.JsonUtil;
 import com.makeit.utils.data.convert.StreamUtil;
 import com.makeit.utils.old.StringUtils;
-import com.sun.jmx.snmp.Timestamp;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.collections4.CollectionUtils;
 import org.apache.commons.lang3.RandomUtils;
@@ -192,6 +191,16 @@ public class IotProductDeviceService extends IotCommonService {
         return breatheList;
     }
 
+    public static void main(String[] args) {
+        LocalDateTime localDateTime = LocalDateTime.now();
+        long timeStamp = localDateTime.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
+        System.out.println(timeStamp);
+
+        long timestamp = localDateTime.toInstant(ZoneOffset.of("+8")).toEpochMilli();
+        System.out.println("LocalDateTime to Timestamp: " + timestamp);
+
+    }
+
     public static String formatLongTime(long time) {
         return DEFAULT_FORMATTER.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(time), ZoneId.systemDefault()));
     }